Liberland

City Croatia, Croatia

A self-proclaimed libertarian micro-state Liberland

Liberland, officially the Free Republic of Liberland, is a micronation claiming an uninhabited parcel of disputed land on the western bank of the Danube, between Croatia and Serbia. It was first proclaimed on 13 April 2015 by Czech right-libertarian politician and activist Vít Jedlička.
The official website of Liberland states that the nation was created due to ongoing Croatia–Serbia border dispute, in which some areas to the east of Danube are claimed by both Serbia and Croatia, while some areas to the west, including the area of Liberland, are considered part of Serbia by Croatia, but Serbia does not claim them.
The land in question is 7 km² (2.7 sq mi) wide, or roughly the size of Gibraltar, and has been administered by Croatia since the Croatian War of Independence. There has been no diplomatic recognition of Liberland by any country from the United Nations, although it has established relations with unrecognized Somaliland.